Cascadian Montana
Flag of Montana
Largest City Missoula
Population approx 350,000
Area approx 65,000 km²
Highest Point Mount Evans   3,245 m

The Cascadian portion of the current state of Montana includes, roughly, the eleven counties of Lincoln County, Flathead County, Sanders County, Lake County, Mineral County, Missoula County, Powell County, Ravalli County, Granite County, Deer Lodge County, and Silver Bow County. Cascadian Montana is the easternmost portion of Cascadia.